Is solar worth it in Rhode Island?
A 6 kW system pays for itself in
5.2 years$12,600 after the tax credit
Over its life the system generates power at 6.7¢ per kilowatt hour against the 29.46¢ Rhode Island utilities charge. That comparison, rather than the sunshine, is what decides it.
What your utility credits matters more than the weather
Full retail credit
5.2 yrs
Credited below retail
7.9 yrs
The panels are identical in both columns. The only difference is what the utility pays for power you export rather than use, and states have been cutting that. Check what Rhode Island requires of your utility before treating the left-hand figure as yours.
The numbers behind it
A 6 kW array at a representative point in Rhode Island produces about 7,953 kilowatt hours a year — 1,325 per kilowatt installed. At $3.00 a watt that is $18,000 before the 30% federal credit and $12,600 after it, saving about $2,343 in the first year.
Common questions
Is solar worth it in Rhode Island?
A 6 kW system pays for itself in about 5.2 years with full net metering, and around 7.9 years where exports are credited below retail. It generates power at 6.7¢ per kilowatt hour against the 29.46¢ the utility charges.
How much do solar panels produce in Rhode Island?
About 1,325 kilowatt hours per kilowatt of panels a year, so a 6 kW system produces roughly 7,953 kWh. Modelled by NREL's PVWatts for a south-facing roof at a representative point in the state.
What does a solar system cost in Rhode Island?
About $18,000 before incentives for 6 kW at $3.00 a watt, or $12,600 after the 30% federal tax credit. That credit reduces tax owed rather than the price paid.
Your roof, not the state
The calculator models your own ZIP code rather than a point in the middle of the state, and lets you set the system size, the installed price and the export credit.
Solar payback calculatorProduction modelled by NREL PVWatts for the centroid of Rhode Island's ZIP codes, south-facing at 20°. A state is not a point — a centroid can sit in the sunnier half, as it does in states split by mountains, so treat this as the state's middle rather than your address. Electricity price from the EIA, 2026-05. Payback assumes 2% annual price rises and 0.5% panel degradation.